Gentle Giant Rowing, whose boathouse, also home to the Wentworth Institute of Technology team and the joint Somerville-Everett High School team, is on the connected Mystic River, also practices on the Malden River. Motorboats and anglers are also seen; swimming is not common on the river due to a bacteria counts above standards for swimming. References Mystic River Rivers of Middlesex County, Massachusetts Rivers of Massachusetts